Roll ramming apparatus.



E. M. HUGGINS.

H'OLLRAMMINGAPPARMUS.

APPLICATION FILED NOV. I9 |914.

Patented Mar. 21, 1916.

2 SHEETS-SHEET I.

ATTORNEYS THE COLUMBIA FLANOGMPH co1.- WAsHlNa'roN/D. Bf

E. M. HUGGNS.

ROLL RAMMING APPARATUS.

APPLlcATloN FILED Nqv.19. 1914.

Patented Mar. 21,1916.

2 SHEETS--SHEET 2.

ATTORNEYS THE CDLUMBIA PLANOURAPH C0.. WASHINGTON. D. C.

Civ

s aras ar anion EDWARD MELVILLE HUGGINS, 0F NEW YORK, Y.. ASSIGNOR TOTHE SNEAD & CO. IRON WORKS, OE JERSEY CITY, NEW JERSEY, .A CORPORATIONOF NEW JERSEY.

ROLL BAMIVIING APPARATUS.

Specification of Letters Patent.

Fatontcd Mar. 21, 1916.

Application led November 19, 1914. Serial No. 872,895.

To all whom t may concern: l

Be it known that I, EDWARD MELVILLE I-IUGGINS, a citizen of the UnitedStates, residing in New York, county of New York and State of New York,have invented cer` tain new and useful Improvements in Roll RammingApparatus, of which the following is a specification.

This invention relates to roll ramming apparatus, and it has for one ofits primary objects the combination with roll ramming apparatus of animproved mechanism whereby a plurality of flasks may be convenientlyland expeditiously handled and rammed in such manner that the workmencarrying on the different steps of the operation do not interfere withone another.

Another object of the invention has reference to the provision of ashiftable mold table coperating with a roll ramming Inachine during theramming operation and 'movable to facilitate the handling of the moldparts.

The foregoing, together with such other objects as may hereinafterappear or are in-v cident to my invention, I attain by means of aconstruction which I have illustrated in preferred form in theaccompanying drawings, wherein:

Figure l isa diagrammaticillustration of a roll ramming mechanismshowing the ap- Y plication of my improvements thereto, the parts beingshown in plan view; Fig. 2 is a side elevation of certain parts of theramming mechanism; Fig. 3 is an end view of Fig. l; and Fig. et is aside elevation of my improved mold table apparatus.

Attention is first directed to the roll rammingapparatus, of which Ihave illustrated only those parts which are necessary to point out thefunctional and coperative characteristics of my improvements. The rollramming apparatus'comprises a base block, 7 at the Vforward end of whichis a pair of stationary tracks 8, preferably composed of angle irons. Aramming roll 9 of usual construction is adapted to ride on these tracks,and may be operated in any desired manner, although I prefer to actuateit by fluid pressure. In the construction shown, the roll is providedwith a forked yoke l0, to which is secured a piston rod 11v operated bya piston (not shown) working in the cylinder 12. In order to compensatefor the vertical movement which takes place vwhen the roll rides ontoand from oli' the flask, the cylinder l2 is trunnioned in the brackets13 carried on thebase block 7. At the forward end of the rammingapparatus, I provide a pair of movable tracks l-l, preferably of atiltingtype hinged to the base block by means of the bracket member 15,as at 16. The operation and functions of the movable tacks `will befurther considered hereinafter.

Adjacent to the forward end of the ramming apparatus, I provide a moldtable supporting means which in the preferred embodiment of my inventioncomprises a pair of tracks 17 extending transversely of the rammingapparatus and supported in any suitable manner, as by the foundationmembers 18, (see Figs. 3 and l). These tracks are adapted to supportmovable mold tables of which there are two, A and B. respectively. Themold tables are provided with wheels 19, flanged to engage the tracks toprevent relative lateral displacement. and at the top the tables areprovided with plane surfaces to support a pattern plate and a flask 20.

While there are but two mold tables. the supporting mechanism thereforhas three operative stations, a central one in substantial alinementwith the molding apparatus and a station located on either side thereof.In order to maintain the tables in their respective operative stations,I provide three sets of molds or grooves, 2l, 22, and 23. in the tracks17` which are engaged by the wheels of the tables and serve as a meansto position them. The tracks are also provided with three stops 24 whichare adapted to be engaged by the lugs or abutments 25 formed on thetables. These abutments are oppositely positioned with respect to eachother and lie on opposite sides of the center line of the Vrespectivemovable mold tables, so that the central stop serves to limit the inwardmovement of both tables to the central station. The end stops limit themovement of the tables to the outer stations. The purpose of theprovision of the notches in the tracks 17 is to prevent accidentalshifting of the tables during the different molding operations. It willbe seen from the foregoing that each table assumes two operativepositions, one at the center of the apparatus, and one to the sidethereof, as will be clear from inspection of Figs. l and 3 in moldtables is to be brought to the central station in alinementwith themolding apparatus, the tracks are swung to an inoperative position inwhich they lie clear of the mold tables and their supporting mechanism,the roll in such case being also retracted to inoperative position,resting on the stationary tracks 8. After the table with its flask hasbeen moved to central position, the tracks 1st Varelowered until theyrest upon and are supported by the top edges of the flask, as shown inFig. 3 in dotted lines. The flask being filled with sand, the roll isthen ad Vvanced from the stationary tracks onto theV movable tracks andacross the flask to ram the sand, after which it is retracted back overthe flask to inoperativeposition. The tracks'14 are then swung clear andthe mold table with the rammed mold is retracted to its respective outerstation where the mold is drawn. A new flask is then placed in positionover a pattern, the facing sandis riddled on, and the flask filled withsand, after which this table is again ready for another rainmingoperation. It will be understood that while one tableis in centralposition for the rainming operation, the other table is at its outerstation being prepared for a rainming operation, after its completedmold has been removed. It will be noted that the mold tablejsupportingmeans in reality forms va part of the rainming apparatus. Y

It-'will be apparent that the combination of amovable flask supportingtable Vor device, with a roll ramming apparatus having a movable trackadapted to support the roll over the flask during the rainmingoperation, is very advantageous, in that the facility with which theparts may be handled and the Voperations carried out is greatlyincreased. The chief' advantageof the pre- Y ferred embodiment of theinvention is that Y the mold preparing, mold rainming, and

mold drawing operations may be carried on simultaneously, in aconvenientand expeditious manner, without interference between therespective workmen. Greater efhciency and economy is thus insured. Y

VThe arrangement of the moldtable supporting mechanism transversely ofthe rainming apparatus has a further advantage in that the tables areheld against displacement which would otherwise be occasioned by thethrust exerted bythe roll, as it is reciprocated. This is prevented bythe engagement of theV wheel flanges with the rails 17. The grooves inthe rails are'sufficient to prevent accidental lateral displacement ofthe mold tables under load. Lateral and longitudinal displacement of'the flasks relative to vthe Vears 26 and 27 and the mold` tables isprevented by means of the (see Fig. Lt)

I do not intend to limit myself to the precise construction shown, asvariations can be made without departing from the spirit Y of theinvention as defined.

A marked advantage incident'to the use of a mold supporting table whichis not fast or permanently attached but which on the contrary is capableof being removed fromV the machine, resides in the fact that mold Ysupporting tables of different. sizes maybe used inl order toaccommodateV flasks ofjdifferent sizes. For example, since the plane' ofmovement of the roll is relatively fiXed,

removable Ypins 25 Q. The combination in molding apparatus `V of a rollrainming mechanism having a reciprocating raniming rolland a support forthe roll when the latter is retractedto an inoperative position, amoldtablesupportingv means located adjacent to Ysaid support, a

shiftable mold table mounted on said supporting means for movement toVanroperative position Vadgacent to and in alinement with the rainmingmechanism, and `a flask on said table adapted to serve as a means fromwhich the roll may be supported as the latter is reciprocated duringtheV raniining operation.

3. The combination in Vmold-ingapparatus iio of a roll rainmingmechanism having areciprocating ramming roll and a support forL the rollwhenthe latter is retracted toV an inoperative position, a moldy tablesupporting means located adjacent `to said support and extendingtransverselythereof, a shiftable mold table mounted onsaid supportingmeans for movement;into'andout of alinement with therainmingmechanisnnrand a flask Von said table Vadapted to serve as aineans'from which the roll may be supported as the latter isreciprocated during the frainming operation. Y Y f 4. A moldingapparatus comprising in combination a roll rainming mechanism having areciprocating Vrainming ',roll, a transportable mold supporting tablecop-v erating with said ramming'mechanism 'when moved into alinementtherewith, a 'flask on? ,said table, means for advancing the roll acrossthe flask to ram the sand therein, and a supporting means independentfrom said mold table for supporting the roll when the 5 latter is movedtoV an inoperative position clear of the table. y

5. A roll ramming apparatus comprising in combination a reciprocatingroll, a support therefor adapted to support the rollin a retractedposition, a movablermold table adapted to be brought into alinement withthe said support, a flask on the table, and a movable roll ysupportingmember adapted to rest on the flask when moved to operative 5 positionwhereby the roll may be advanced from its support over the flask and tolie clear of the mold table when moved to an inoperative positionwhereby the mold table with its flask may be removed. Y o 6. A Vrollramming apparatus comprising in combination 'a reciprocating roll, asupport therefor adapted to support the roll in retracted position, amovable mold table .adapted to be brought into alinement with 5 the saidsupport, a flasko-n the table, and a movable roll supporting memberhinged to said support and adapted to rest on the flask when moved tooperative position whereby the roll may be advanced from its 0 supportover the flask and to lie clear of the mold table when moved to aninoperative position whereby the mold table with its iask may beremoved.

7. A roll ramming apparatus comprising 5 in combination a reciprocatingroll, a support therefor, a mold table supporting device adjacent tosaid support and extending transversely of the ramming apparatus, and aplurality of shiftable mold supporting 0 tables mounted on saidsupporting device for movement successively into and out of alinementwith the ramming apparatus whereby the roll may be advanced from off itssupport for ramming the molds.

5 8. A roll ramming apparatus comprising in combination a reciprocatingroll, a support therefor, and a plurality of mold supporting tablesmovable successively into and out of alinementwith said support wherebythe roll may be advanced for ramming the molds.

9. A roll ramming apparatus comprising in combination a reciprocatingroll, a support therefor, a plurality of mold'supportling tables movablesuccessively into and out of alinement with said support whereby theroll may be advanced for ramming the molds, and a second movable supportfor the roll adapted when moved to operative position to support theroll for movement across a mold table and when moved to inoperativeposition to permit of the movement of the mold tables.

lO. A roll ramming apparatus comprising in combination a reciprocatingroll, a support therefor, a mold table supporting de vice adjacent tosaid support and extending transversely of the ramming apparatus, saiddevice having three operative stations, a central one in alinement withthe roll support and one on each side thereof, a pair of mold tablesmovably mounted on said device for movement from .a side station to thecentral one and vice versa, and means for advancing the roll to ram amold when a table has been moved to central position.

ll. A roll ramming apparatus comprising in combination a reciprocatingroll, a support therefor, a mold table supporting device adjacent tosaid support and extending transversely of the ramming apparatus, saiddevice having three operative stations, a central one in alinement withthe'roll support and one on each side thereof, a pair of mold tablesmovably mounted on said device for movement from a side station to thecentral one and vice versa, means for advancing the roll to ram a moldwhen table has been moved to central position, and means to prevent'thetables from being displaced by the thrust of the roll.

12. A roll ramming apparatus comprising in combination a reciprocatingroll, a support therefor, a mold table supporting device adjacent tosaid support and extending transversely of the ramming apparatus, saiddevice having three operative stations, a central one in alinement withthe roll support and one on each side thereof, a pair of mold tablesmovably mounted on said device for movement from a side station tothecentral one and vice versa, means for advancing the roll to ram amold when a table has been moved to central position, and means formaintaining the tables in position in any of said operative stations.

13. A roll ramming apparatus comprising in combination a reciprocatingroll, a support therefor, a mold table supporting device adjacent tosaid support and extending transversely of the ramming apparatus, saiddevice having three operative stations, a central one in alinement withthe roll support and one on each side thereof, a pair of mold tablesmovably mounted on said device for movement from a side station to thecentral one and vice versa, means for advancing the roll to ram a moldwhen a table has been moved to central position, a flask on a table, andmeans for preventing relative displacement of the flask and table as theroll is being operated.

14. A roll ramming apparatus comprising in combination a reciprocatingroll, a support therefor, a mold table supporting device adjacent tosaid support and extending transversely thereof, a pair of mold tablesmovably mounted on said device, said device being provided with threeopeative stations, a central one in alinement with the Y Y Copies ofthis patent may be obtained for ve cents each, by addressing theCommissioner o'ate'nits,

roll support and one on each side thereof, and stop mechanism adapted tolimit the movement of the tables and arranged to permit `each table tobe moved from a side station to the central station and back to saidside station.

15. A roll ramming apparatus comprising in combination a reciprocatingroll, a su-p- Y port therefor adapted to support the roll in retractedposition, a movable mold table adapted to be brought vinto alinementwith the said support, a flask on the table, and a movable rollsupporting member adapted to extend over the flask when moved tooperative.positionwvhereby the roll may be advanced from its supportover the laskand to lie clear of the mold table when moved t0 aninoperative position.

16. lA roll ramming apparatus comprising in combination areciprocatingroll, .a support for the roll,and a coperating movable moldsupportingtable adapted to carry a flask and movable into alinement withthe roll for the ramming operation and also to aA point removedtherefrom to facilitate the 'handling of the mold parts. Y

17. A roll ramming apparatus comprising in combination a reciprocating`roll, a support therefor' adapted to support kthe roll in retractedposition, .a movable mold table adapted to be brought into alinementwith the said support, a iask on the table, and a.V

in combination a reciprccatingroll, vas'up-VV port there-for, a moldtablesupporting device adjacentto said support andrextendmg transverselyof the ramming apparatus, a

plurality of shiftable mold supporting tables Y mounted on saidsupporting device for movevment into and out kof alinement withYtheramming apparatus,and `means for advancing thef roll.

in combustion, av roll a support therefor, a

Y I 45V ,Y 19. A roll ramming'app'aratus comprising Y plurality of moldsupporting tables movable I Y successively into and out of alinementWith said support,Y and means for'v advancing the roll.

In testimony Where-of IV` have hereunto signed my name in the subscribedWitnesses.

Washington, D. C.

presence ofthe two Y 1 EDWARDVMELVILLE falacias.V

